Multi-monitor wallpaper calculator
Find the canvas size for a wallpaper spanning 2–6 monitors. Combine mixed resolutions, portrait screens or custom positions, then copy the crop coordinates for each display.
Monitor arrangement
Pixel-based planningWallpaper canvas & layout
This is a pixel-coordinate plan, not a physical desk simulation. Display scaling, different pixel densities and wallpaper software can change the final appearance. No screen permissions or uploads are needed.
| Monitor | X | Y | Width | Height |
|---|
The SVG download is a numbered layout template, not a photo wallpaper. Import it into an editor as a guide, then place and export your artwork.
How to calculate a wallpaper for multiple monitors
- Choose the number of screens and enter each display's current pixel resolution. Swap width and height for a portrait screen.
- Use side-by-side or stacked placement for a simple arrangement. Choose custom coordinates for multiple rows or offset screens.
- Read the canvas dimensions and inspect the numbered preview. Gray canvas regions are not covered by a monitor.
- Create a wallpaper at that canvas size. Use the table to position important details or crop a separate image for each screen.
- Apply the wallpaper and check the result in your actual desktop setup.
The default two 1920 × 1080 displays produce a 3840 × 1080 canvas. No display information is automatically read from your computer. Enter the sizes and arrangement you intend to use; the calculator does not change your operating-system settings.
Dual and triple monitor wallpaper sizes
| Arrangement | Wallpaper canvas | Canvas ratio |
|---|---|---|
| Two 1920 × 1080 screens | 3840 × 1080 | 32:9 |
| Three 1920 × 1080 screens | 5760 × 1080 | 16:3 |
| Two 2560 × 1440 screens | 5120 × 1440 | 32:9 |
| Two 3840 × 2160 screens | 7680 × 2160 | 32:9 |
| 1920 × 1080 plus 2560 × 1440 | 4480 × 1440 | 28:9 |
| Two 1920 × 1080 screens stacked | 1920 × 2160 | 8:9 |
A dual-screen setup is not always twice a monitor's width. That shortcut works for matching screens placed in one horizontal row. Mixed resolutions, vertical arrangements and custom offsets need a bounding rectangle around the complete layout.
The bounding canvas formula
Each monitor is a rectangle with a left coordinate X, a top coordinate Y, a width and a height. The canvas must extend from the leftmost edge to the rightmost edge, and from the topmost edge to the bottommost edge.
Canvas width = max(X + monitor width) − min(X)Canvas height = max(Y + monitor height) − min(Y)The calculator translates every crop position so the exported canvas starts at (0, 0). For example, a 1920 × 1080 monitor at X = −1920 beside one at X = 0 still needs 3840 × 1080 pixels. Their crop X coordinates become 0 and 1920. Negative coordinates do not mean negative image dimensions.
Unused pixels equal the bounding area minus the sum of monitor areas. This calculation is valid because overlapping rectangles are rejected. Touching edges are allowed and do not count as overlap. A canvas with blank corners can still be correct: those pixels are outside the active screens.
Mixed resolutions and portrait monitors
Consider a 1920 × 1080 display next to a 2560 × 1440 display. Top alignment gives a 4480 × 1440 canvas with a 1920 × 360 unused strip below the shorter screen. Center alignment puts the smaller screen 180 pixels lower, dividing that unused space above and below it.
For a 1080 × 1920 portrait monitor next to a 2560 × 1440 landscape monitor, the horizontal canvas is 3640 × 1920. With centered alignment the landscape screen begins 240 pixels from the top. The numbered table shows the exact crop rectangles so you can keep faces, text and other focal points away from screen boundaries.
Automatic centering uses whole-pixel coordinates. If the height or width difference is odd, one margin is one pixel larger than the other. Custom mode lets you position the screen explicitly. Use display resolutions in the same coordinate system throughout; do not mix scaled logical positions with unscaled raster dimensions.
Custom layouts, gaps and bezel limitations
Custom coordinates support layouts such as a 2 × 2 grid, a monitor above the middle of a row, or screens with a vertical offset. X is the left edge and Y is the top edge. Start with an automatic arrangement and switch to custom mode to copy its positions, then edit them.
A positive gap between rectangles adds unused canvas space. This is a mathematical planning feature, not a guarantee that your wallpaper application supports that gap. A physical bezel measured in millimeters is not a pixel gap unless you deliberately convert and account for it in a compatible workflow.
Two monitors with equal pixel dimensions can have different physical sizes. Objects may therefore appear at different real-world sizes even when the pixel layout lines up. This calculator does not compensate for monitor diagonals, physical pixel density, bezel width or perspective. Use a physical-alignment workflow when matching a continuous horizon across unequal panels.
Apply a spanning wallpaper and verify it
On Windows, check the display arrangement and orientation first. Microsoft explains how to identify and arrange screens in its multiple-monitor setup guide. In desktop background settings, the Span fit option extends a picture across monitors; see Microsoft's background personalization guide.
Export a test image with clearly numbered screen regions before finishing detailed artwork. Compare the result with this diagram and adjust your layout or wallpaper settings if the application crops or scales it differently. If you prefer separate wallpapers, crop the canvas using the table and assign each exported image to its intended display.
Do not assume a browser's viewport size is your monitor resolution. Browser zoom and desktop scaling affect browser measurements. The viewport & DPR calculator explains that distinction. For the artwork itself, inspect the source with the image dimension checker, then compare the desired crop with the crop loss calculator.
Multi-monitor wallpaper FAQ
What size wallpaper do I need for two 1080p monitors?
Two 1920 × 1080 screens next to each other with aligned edges use a 3840 × 1080 canvas. If they are stacked vertically, use 1920 × 2160 instead.
What size is a triple 1440p wallpaper?
Three 2560 × 1440 monitors in a touching horizontal row use 7680 × 1440 pixels. Offsets or a different arrangement can change the bounding height or width.
Why is part of the preview gray?
Gray regions are inside the rectangular canvas but outside every monitor. Mixed heights or custom offsets create these unused regions. They are not extra displays.
Does scaling at 125% change the answer?
The calculation uses exactly the pixel dimensions and positions you enter. It does not model operating-system scaling. Verify the coordinate convention and wallpaper behavior in your actual environment instead of dividing every screen by its scale setting.
Can I download a finished wallpaper?
The download is an SVG layout guide with numbered rectangles. It does not contain your photo or generate finished artwork. Import it into an editor, add your image and export the finished wallpaper in a format your desktop supports.
Why are overlapping monitors rejected?
This tool plans distinct, non-overlapping regions of a spanning image. Duplicate or mirrored displays are a different use case. Move the rectangles so their edges touch or have the intended gap.